<正>针对C/S模式管理信息系统升级工作量大、升级过程不稳定、升级文件不安全的现状，提出一种智能升级的解决方法。该升级系统由数据库、用户端、文件上传端和伺服端组成。升级文件存放在应用系统数据库中，客户端的引导程序负责系统文件的升级，如无法升级则请求伺服端协同解决；伺服端负责更新数据库的连接信息；文件上传端管理数据库中的升级文件。这种升级解决机制能应对升级文件存放地址、数据库用户名或密码发生改变等情况。

The ISSR-PCR marker was used to study relationships and genetic polymorphism for nine species and one variation of Hemerocallis. Ten primers were screened from 123 random primers. A total of 218 DNA fragments were amplified. They were polymorphic. The molecular evidence indicated that different species in the genus were high polymorphism. Nei’similarity coefficients and genetic distances was calculated by TFPGA. The dendrogram of nine species and one variation in the genus can be constructed by UPGMA. The results indicated that the nine species and one variation of the Hemerocallis can be divided into four groups. H. lilioasphode, H. citrina, H. fulva, H. dumortieri, H. fulva var. kwanso were in the first group; The second group was the cluster of H. forrestii, H. plicata and H. minor. The third group was H. flava, the fourth group was H. nana. The genetic distance among the different species ranged from 0.0187 to 0.4941. The closest relationship was H. lilioasphode and H. citrina. The next was H. forrestii with H. plicata and H. minor. H. fulva, H. dumortieri, H. fulva var. kwanso were coming after that. H. nana kept the further genetic distance with other daylily species.